/*设计图是750，设置html font-size：75*/
@f-s-b: 75;

.f(@number:5rem)
{
    font-size: @number / @f-s-b;
}
.p(@t,@r,@b,@l)
{
    padding: @t/@f-s-b @r/@f-s-b  @b/@f-s-b  @l/@f-s-b;
}
.m(@t,@r,@b,@l)
{
    margin: @t/@f-s-b @r/@f-s-b  @b/@f-s-b  @l/@f-s-b;
}
.w(@number:5rem)
{
    width: @number / @f-s-b;
}
.h(@number:5rem)
{
    height: @number / @f-s-b;
} 
.l-h(@number:5rem)
{
    line-height: @number / @f-s-b;
}
.t(@number:5rem)
{
    top: @number / @f-s-b;
}
.l(@number:5rem)
{
    left: @number / @f-s-b;
}
.b(@number:5rem)
{
    bottom: @number / @f-s-b;
}
.r(@number:5rem)
{
    right: @number / @f-s-b;
}
.m-c()
{
    margin-left: auto;
    margin-right: auto;
}
.t-c()
{
    text-align: center;
}
